legal?

[yooperbballref]

On the way to my game tonight I was telling my partner about this website, and he gave me a situation he wasn't sure on and wanted me to post for him.

Him and his partner for that game both have 40+ years of experence and have never seen this happen before until last week. Here it is...

The first quarter had just come to a finish and the home team's coach took his players into the locker room. (im not sure why but neither of them said anything to them as they left the court) The players and coach were only in the locker room for about 30 seconds and they were back onto the court ready to go for the start of play.

Is there any rule about going into the locker room between quarters as long as you are back in time to start the next quarter?

and as a side note, my first thought was the coach wanted to go in and give her players a good *** chewing, but this coach as had a long history of being very calm making that unlikely